Electric heater.



L. f. PARKHURST & H. G. WEEKS.

ELECTRIC HEATER.

APPLICATION FILED SEPT. 27, 1909. 975,712. Patented Nov. 15,1910.

E 5/ x A a 5 l a 5 8 6 44mm mm a ama-inst, naaarelw'nnx f Be it known that we, LEON F. Panx'rrnasr UNIF ED PATENT OF I E;

s, or BrnGHAM-ron, New YORK, AssIGNoRs '10 mamonnnnncrnrc "ooiurgmyi or summa ion. unwiy'onn, A 'coRroaA'r'IoN MPFINEWJYORK-J i 3 l-n'nnormc H ATER.

? a ita m nt. Patented Nov.15,1910.

Application file d September 27, 1909. 'Seria1 No;51 9,811.

To all whom it may and H ARRY G. WEEKS, citizens of the United States, residing at Binghamton, county or Broome, State of New York, have invented certain new and useful Improvements "ii1 Electric Heaters, of which the following-l is a "full, clear, and exactdescript-ionf Our invention relates to improvementsljn electric heaters and particularly though not exclusively to such heaters as a-pplled to and in combination with radiators to be em-' ployed in the heating. of apartments and the like.

of such simplicity of arrangementas to be susceptible of ready assembling andfdisassembling for repairs and the like.

A further object of the invention is'to provide in such radiator electric heating elements which shall be non-inductive character and lTl-WhlCh the windlngsof the elements will be so arranged as to facilitate connection with the source of current.

Other objects, and advantages of the invention will appear from the following description of a preferred form of our invention which has been selected for illustration and which is illustrated in the accompany ing drawings. Figure 1 is an elevation of a radiator em bodying our invention, parts being broken away for clear illustration. Fig. 2'is a ver tical section on the line Figsfl, Fig.- 3 is a plan View, parts being broken away I forillustration, and F ig. 41 is a detailed iew of one of-the supports uponwhich the resistance element is wound}. I

In the embodiment of our'invention herein selected for illustration, the apparatus comprises a base 1,- a top 2 and 'a plurality of interposed flues 3, which are suitably; supported on flanges 4, formed on the base and likewise engage flanges 5 in the top 2,

said parts being held together by means of binding rods 6, which pass through suitable apertures in the top cured in place by nuts 7. Within each flue is arranged a heating element comprising a flat slab or plate 8 of any suitable insulatmeans of metal straps 9 secured to the base 1 and at the top by means of spiders '11,

The object of the invention is to provide. I a construction of the fewest numberof parts.

volving additional through the flues. z

and base and are semg and refractory material which are sup- .ported at the bottom within the flues by having arms preferably right angles to each other, as shown clearly in; Fig. 3, and contactlng with the sides ofthe fiues 3.

Upon each of saidinsulating supports is wound a resistance element 12, which, in the embodiment of our lnventlon here illustrated, is shown as a, double winding secured at the top of each support as by a screw.

13 around which'the resistance winding is passed, while the ends of said double windmg are secured to screws 14 in said support,

which screws may also serve as binding posts for connection with the leading-in wires 'or cables l5.- For the secure holding and proper spacing of the winding of, the resistance element on the insulating support 8 the latter is provided at its opposite edges-with notches grounding of the resistzrnoeelement. And,

furthermore, in the case of an air heater inreslstance to a1r draft In some instances it may be desirable to employ metal supports coveredwith insulating.v material for the resistance element. In

such cases this double winding of the resist/- .ance element results-in the further advantage' (if beingY-rnon-inductive especially when alternating currents are used, and prevents the humming of metahparts.

v Whil'e we have herein described a particu lar embodimentof, our invention, it is to be .understood that the-same may be altered in details and in relative arrangement of parts,

without departi-ng fromthe spiritand scope thereofi q c What we claim" is: i i c 1, Asa-electric heatercomprising a base, a top, a plurality of open flues supported on said base ands-upporting said top, supporting brackets in each flue an electric heating element supported in each flue by said brackets and insulated therefrom, said element comprising a fiat slab of non-insulating and refractory material having an electric resistance conductor spirally wound thereon in double length whereby the terminals of said resistance conductorsare broughtto the same end of said heating element.

2. A portable electric heater comprising a base, a top, a plurality of open flues mounted on said base and supporting said top, supporting brackets in each flue an electric heating element supported within said flue or fiues on said brackets and insulated therefron'i and wniprising a flat slab of insulating and refractory material and an electric resistance element spirally wound thereon from one end to the other and returning from the second to the first end in a similar spiral whereby the terminals of said elementare brought to the same end of said support.

LEON F. PARKHURST. HARRY Gr. WEEKS.

Witnesses:

ISRAEL T. DEYo, In, E. HiLLEn. 

